1. Ingeniería

Ixef
®
Ixef® PARA
for Aircraft Seating
SPECIALTY
POLYMERS
Aesthetics and Strength
Ease of Processing
Ixef polyarylamide (PARA) provides a unique combination
of high strength and a smooth, beautiful surface, making
it ideal for arm rests and other seating components in
aircraft cabin interiors.
Ixef ® PARA resin offers good injectability and high flow,
even for grades with high glass fiber content, making
them ideal for complex or thin-walled parts. Immediately
below the smooth, outer surface, glass fibers orient in the
flow direction, while at the core, fiber orientation becomes
random. The result is a strong polymer compound with a
class A surface finish and unmatched dimensional stability.
®
Key features
• High strength and stiffness
• Class A surface
• ABD 0031 & BSS 7239 toxic gas emissions
• FAR 25.853a (60-second vertical burn)
• FAR 25.853d (smoke density), thickness dependent
Ixef PARA compounds typically contain 50 % to 60 %
glass fiber reinforcement, giving them remarkable strength
and rigidity. What makes them unique is that even with
high glass loadings, the smooth, resin-rich surface
delivers a high-gloss, glass-free finish that’s ideal for
painting, metallization or producing a naturally reflective
shell.
®
Good Dimensional Stability
The coefficient of linear thermal expansion (CLTE)
of Ixef ® PARA resin is very low, similar to that of metals
or metal alloys at ambient temperatures. Low mold
shrinkage allows for high reproducibility and the ability
to maintain tight tolerances.
Table 1: Ixef ® PARA grades for aircraft interiors
Grade
Mold
Surface layer
Description
Ixef ® 1521
50 % glass fiber, flame retardant
Ixef ® 1524
50 % glass fiber, halogen-free flame retardant
Skin layer
Glass fibers orient
preferentially in the
flow direction near
the mold.
Core layer
Glass fibers orient
randomly in the center
of the part.
Skin layer
Surface layer
Resin-rich surface
forms when part is
packed into a mold
with temperatures
above 120 °C (248 °F).
Mold
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